Malicious PDF — malware analysis report

Static analysis result for SHA-256 725f445d90757a9c…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 08:35:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dc595009cfb0055cf36c6b583825d340 SHA-1: 6dc9b756c049633920c209ab16d16399a38fcc7d SHA-256: 725f445d90757a9c564a0e63eb49c20732dfecd9f73a3d982c2ef6dcf469a099
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure and an MFA/2FA-themed lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/431946152/hack-a-game-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/tiktok-editor-free-download_GM835599320.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-person_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5093 28040 bytes
SHA-256: 5a4fe4f34cf75cc50dac35c38fdc24200c40dc9f8f68ec33ce78f43751494984
font_01_sfnt_off00008f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F81 17856 bytes
SHA-256: 9fd96bc08588ed7ebb523c95e1e7ae68d4a51fb60fc2df2c843e3c05d3b8bc09

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